function [U_bits,L_bits]=divide_LHB_UHB_extract_process(bin_stego_orgin)
%UNTITLED 此处显示有关此函数的摘要
%   只需要将bin_stego_orgin，4*4分块拿出L最低位和U最低位
s_i=0;
s_j=1;%用来指向隐写向量
[col,raw,k]=size(bin_stego_orgin);
for i=1:4:col
    s_i=s_i+1;
    s_j=1;
    for j=1:4:raw
        UHB_LSB=bin_stego_orgin(i:i+1,j:j+3,1);%拿出最低位
        LHB_LSB=bin_stego_orgin(i+2:i+3,j:j+3,1);
        U_bits(s_i,s_j,:)=reshape(UHB_LSB',1,8);
        L_bits(s_i,s_j,:)=reshape(LHB_LSB',1,8);
        s_j=s_j+1;
    end
end
end

